@ Naloga 1
@ add 32-bit

.text
.org 0x20

stev1:  .word 10
stev2:  .word 5
rez:    .space 4

.global _start
_start:

  adr r0, stev1
  ldr r1, [r0]

  adr r0, stev2
  ldr r2, [r0]

  add r1, r2

  adr r0, rez
  str r1, [r0]


@ sub 32-bit

.text
.org 0x20

stev1:  .word 10
stev2:  .word 5
rez:    .space 4

.global _start
_start:

  adr r0, stev1
  ldr r1, [r0]

  adr r0, stev2
  ldr r2, [r0]

  sub r1, r2

  adr r0, rez
  str r1, [r0]

@ add 16-bit

.text
.org 0x20

stev1:  .hword  10
stev2:  .hword  5
rez:    .space  2

.align

.global _start
_start:

  adr   r0, stev1
  ldrh  r1, [r0]

  adr   r0, stev2
  ldrh  r2, [r0]

  add   r1, r2

  adr   r0, rez
  str   r1, [r0]

@ sub 16-bit

.text
.org 0x20

stev1:  .hword  10
stev2:  .hword  5
rez:    .space  2

.align

.global _start
_start:

  adr   r0, stev1
  ldrh  r1, [r0]

  adr   r0, stev2
  ldrh  r2, [r0]

  sub   r1, r2

  adr   r0, rez
  str   r1, [r0]

@ add 8-bit

.text
.org 0x20

stev1:  .byte   10
stev2:  .byte   5
rez:    .space  1

.align

.global _start
_start:

  adr   r0, stev1
  ldrb  r1, [r0]

  adr   r0, stev2
  ldrb  r2, [r0]

  add   r1, r2

  adr   r0, rez
  str   r1, [r0]

@ sub 8-bit

.text
.org 0x20

stev1:  .byte   10
stev2:  .byte   5
rez:    .space  1

.align

.global _start
_start:

  adr   r0, stev1
  ldrb  r1, [r0]

  adr   r0, stev2
  ldrb  r2, [r0]

  sub   r1, r2

  adr   r0, rez
  str   r1, [r0]

@ Naloga 2

.text
.org 0x20

stev1:  .word 0x50
stev2:  .word 100
stev3:  .word 0x2f

.align

.global _start
_start:

  adr r0, stev3
  ldr r3, [r0]

  adr r0, stev2
  ldr r2, [r0]

  adr r0, stev1
  ldr r1, [r0]

  add r2, r3
  sub r1, r2, r1

  str r1, [r0]

@ Naloga 3

.text
.org 0x20

stev1:  .word 0x12345678
stev2:  .byte 128
.align
stev3:  .hword 0xf123
.align

.global _start
_start:

  adr r0, stev1
  ldr r1, [r0]

  adr r0, stev2
  ldrb r2, [r0]

  ldrsb r3, [r0]

  adr r0, stev3
  ldrh r4, [r0]

  ldrsh r5, [r0]

@ Naloga 4
@ a

.text
.org 0x20

stev1:  .byte 15
stev2:  .byte 130

.align

.global _start
_start:

  adr   r0, stev2
  ldrb  r2, [r0]

  adr   r0, stev1
  ldrb  r1, [r0]

  add   r1, r2

  str   r1, [r0]

@ b

.text
.org 0x20

stev1:  .byte 15
stev2:  .byte 130

.align

.global _start
_start:

  adr   r0, stev2
  ldrsb r2, [r0]

  adr   r0, stev1
  ldrsb r1, [r0]

  add   r1, r2

  str   r1, [r0]

@ c

.text
.org 0x20

stev1:  .word 128
stev2:  .byte 128

.align

.global _start
_start:

  adr   r0, stev2
  ldrb  r2, [r0]

  adr   r0, stev1
  ldrb  r1, [r0]

  add   r1, r2

  str   r1, [r0]